Improvement in pump-valves



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DAVID W. CLARK, OE TIDIQUTE, PENNSYLVANIA.

Letters Patent ho. 108,237, dated October 11, 1870.

IMPROVEMENT IN PUMP-VALVES.

' The Schedule referred to In these Letters Patent and making part of the laine in a certain improved combination, construction, and

arrangement of parts, as hereinafter described Figure 1 is a sectional elevation of my improved valve, and

Figure 2 is a transverse section of the same. Similar letters of reference indicate correspomling parts.

I propose to employ a flat valve, A, instead of the ball-valves commonly used, and to arrange it on the top of the tube B, or. in a horizontal seat in'the said I tube, and provide it with a guiding stem, 0, and a spring,,D, the guiding stein being arranged in any suitable way or guide by which, the valve will work perpendicularly to its seat, so that it will support the spring 1), arrangedto force the valve down, the objcot being to prevent the gas from raising the valve, or preventing it from closing, as is often the case where there-is a strong current of gas escaping from the well.

For packing the tube B, 1 place a spring jacket, 15, of brass around it, above a nut, F, and iii; thereon leather or other packing, G, of the proper size to fit;

against the working barrel, and above the jacket and packing-rings, I arrange a cup-shaped ring, H, with holes from the bottom leading down to the jacket B,

so that the waten above the valve will have access between it and the tube, and the force of the water lift-ed will be applied between the rings G and the tube B, to force tlienibut against the working barrel and pack tightly against itas long as the leather rings last. v

The water is prevented from escaping below the packing-rings by the nut F, which clamps the rings between it and the shoulder I, below the cup H.

The spring jacket bears outward against the leather rings and maintains a space behind it for thewater.

in order to prevent any slack between the nut 1* and shoulder I, which may arise from the compression of the leather rings, I propose to introduce between the said nut andshouldcr, preferably next to the shoulder, one or more India-rubber rings, K, sulfficientlycompresscd to compensate by expansion from all slack that may occur. joint at the nut l tight, and prevent the escape of the water thercat.

Having thus described my invent-ion,

I claim as new and desire to secure by Letters Patent- The combination, with a flatvalvc A, tube B, and spring guiding-stem O D, of abrass spring-jacket, E, cup-ring H, leather rings G, and nut F, allrelatively arranged as'and for the purpose described.

' DAVID \V. CLARK.

Witnesses:

It. 3H. Monnrsox, G. H. MCOLINTO K.

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